Now showing items 1-10 of 1011
Application of PIXE in the determination of the production cross section of a radionuclide decaying by electron capture
Proton induced X-ray emission (FIXE) has been applied to the measurement of the production cross section of a radionuclide decaying by electron capture. By performing a PIXE type experiment on the daughter nuclide important ...
Cross-section generation of various geo-scientific features without contour digitization using a visual c++ based software application ‘vigat 2005’
(UNIVERSIDAD NACIONAL DE COLOMBIA, 2007)
Cross-section can be described as a two dimensional dataset where the horizontal distances are represented on the x-axis and the depth on the y-axis. A cross-section is a window into the subsurface.This work presents the ...
Palliative Care Physicians and Palliative Radiotherapy, Knowledge and Barriers for Referring: A Cross-sectional Study
Abstract Context. Palliative radiotherapy is effective in the management of symptoms resulting from advanced cancer. However, it remains underutilized. In developed countries, many factors have been linked to this phenomenon ...
Experimental study for the application of water barriers to Spanish small cross section galleries
(Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas., 2015-01-01)
The objective of this work is the implementation of passive water trough barriers to put in practice EN-14591-2:2007 standard, as well as an update of the continuing study of passive water barriers. The viability of water ...
Do Investors Follow the Herd in Option Markets
We investigate the previously unexplored herding behaviour of investors in option markets, by examining equity option contracts traded in the US between 1996 and 2012. We document strong herding effects in option trading ...
Association between adolescent suicide and sociodemographic factors in Chile: Cross-sectional ecological study
(Hogrefe Publishing GmbH, 2015)
© 2015 Hogrefe Publishing. Background: Adolescent suicide rates (ASR) are a matter of concern worldwide. Causes of this trend are not understood and could correspond to socioeconomic factors such as inequality. Aim: To ...
Serum butyrylcholinesterase variants in Santiago Eastern District population Variantes de butirilcolinesterasa sérica en población de Santiago Oriente
(Sociedad Medica de Santiago, 1996)
Background: Succinylcholine causes prolonged apneas in a proportion if subjects that have genetical defect of butyrylcholinesterase, due to the presence of unusual alleles in the locus BCHE. Aim: To estimate allele frequencies ...
Comparison of cross-sectional area of tissue biopsies obtained with two different forceps
(American Thoracic Society, 2016)
Leptin status in adolescence is associated with academic performance in high school: A cross-sectional study in a Chilean birth cohort
(BMJ Publishing Group, 2016)
Objective: Leptin is a pleiotropic hormone associated with learning and memory via brain receptors. However, elevated plasma leptin levels may impair cognitive and memory functions. Since individual differences in memory ...
Early tobacco and alcohol consumption as modifying risk factors on marijuana use Consumo precoz de tabaco y alcohol como factores modificadores del riesgo de uso de marihuana
Objective: To assess the relationship between early tobacco and alcohol use and the risk of marijuana consumption among schoolchildren. Methods: A cross-sectional study comprising data from the Fourth National Study on ...